Vitamin D â Even though I spend a lot of time in the sun during the summer and take Vitamin D during the winter, I was deficient in Vitamin D. This is relatively common with thyroid problems and Iâm using a Vitamin D Serum to help bring my levels up.
1 Wash your hands well after handling or playing with your cat. Also, do not allow your cat to go near your face. Do not rub your eyes or any part of your face before washing your hands.  Take allergy shots as these can completely get rid of your allergic reactions to cat dander.
4. Baking Soda. Baking soda can be used to make an exfoliating scrub to get rid of dark underarms. This will help remove dead skin cells, which is one of the main causes of dark underarms. It will also help unclog skin pores.1  Mix baking soda and water to make a thick paste.2  Use this paste to scrub your underarms. 3  Wash it off and pat dry the area thoroughly. 4  Repeat a few times a week.. Baking Soda. Baking soda can be used to make an exfoliating scrub to get rid of dark underarms. This will help remove dead skin cells, which is one of the main causes of dark underarms. It will also help unclog skin pores.